package cn.codercheng;

/**
 * @ClassName Demo1
 * @Description:
 * @Author CoderCheng
 * @Date 2020-08-14 18:49
 * @Version V1.0
 **/
public class Demo1 {


    public static void main(String[] args) {


        System.out.println("aaaa");

        System.out.println(System.getProperty("java.version"));

        String str= " ssss   ";

        System.out.println(str.stripLeading());

    }
}
